//package com.baor.filter;
//
//import com.baomidou.mybatisplus.core.toolkit.StringUtils;
//import com.baor.domain.LoginUser;
//import com.baor.seacurity.TokenService;
//import com.baor.utils.RedisUtil;
//import io.jsonwebtoken.Claims;
//import org.springframework.beans.factory.annotation.Autowired;
//import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
//import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
//import org.springframework.security.core.context.SecurityContextHolder;
//import org.springframework.stereotype.Component;
//import org.springframework.web.filter.OncePerRequestFilter;
//
//import javax.servlet.FilterChain;
//import javax.servlet.ServletException;
//import javax.servlet.http.HttpServletRequest;
//import javax.servlet.http.HttpServletResponse;
//import java.io.IOException;
//import java.util.Enumeration;
//import java.util.HashMap;
//import java.util.Map;
//import java.util.Objects;
//
//@Component
//@EnableWebSecurity
//public class JwtAuthenticationFilter extends OncePerRequestFilter {
//
//    @Autowired
//    private TokenService tokenService;
//
//    @Autowired
//    private RedisUtil redisUtil;
//
//    @Override
//    protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain) throws ServletException, IOException {
//        response.setHeader("Access-Control-Allow-Origin", "*");
//        StringBuilder headers = new StringBuilder();
//        Enumeration<String> headerNames = request.getHeaders("Access-Control-Request-Headers");
//        if ( Objects.nonNull(headerNames) ){
//            while( headerNames.hasMoreElements() )
//                if (StringUtils.isBlank(headers.toString()))
//                    headers.append(headerNames.nextElement());
//                else
//                    headers.append(",").append(headerNames.nextElement());
//        }
//        response.setHeader("Access-Control-Allow-Headers", headers.toString());
//        response.setContentType("text/html;charset=utf-8");
//        String uri = request.getRequestURI();
//        Map<String,Object> res = new HashMap<>();
//        // 白名单
//        if ( uri.contains("login") ){
//            filterChain.doFilter(request,response);
//            return;
//        }
//        // 获取authorization
//        String authorization = request.getHeader("authorization");//authorization
//        if ( authorization == null || authorization.equals("") )
//        {
//            authorization =request.getParameter("authorization");
//        }
//        // 验证authorization
//        if ( authorization == null || authorization.equals("") ){
//            res.put("code", "403");
//            res.put("msg", "用户信息不存在");
//            response.getWriter().print(res);
//            return;
//        }
//        // 解析authorization
//        Claims claims = tokenService.getBody(authorization);
//        if ( claims == null ){
//            res.put("msg","token不存在或已过期");
//            response.getWriter().print(res);
//            return;
//        }
//
//        String userAccount = claims.getSubject();
//        LoginUser loginUser = (LoginUser) redisUtil.getValue("userAccount:"+userAccount);
//        String status = redisUtil.getValue("loginUser:"+loginUser).toString();
//        if ( !status.equals(authorization) ){
//            response.getWriter().print("请重新登录");
//            return;
//        }
//        UsernamePasswordAuthenticationToken usernamePasswordAuthenticationToken = null;
//        try{
//            usernamePasswordAuthenticationToken = new UsernamePasswordAuthenticationToken(loginUser, loginUser.getPassword(), loginUser.getAuthorities());
//            SecurityContextHolder.getContext().setAuthentication(usernamePasswordAuthenticationToken);
//        }catch (Exception e){
//            System.out.println("error");
//            response.getWriter().append("token不存在");
//            return;
//        }
//        filterChain.doFilter(request, response);
//    }
//}
